Brake Hold Operated Indicator Light Circuit

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: Brake Hold Operated Indicator Light Circuit

Brake Hold Operated Indicator Light Circuit

DESCRIPTION

When the engine switch is on (IG) with the brake hold switch ON, the brake hold operated indicator light illuminates while the brake hold is in operation.

WIRING DIAGRAM

INSPECTION PROCEDURE
NOTE:
When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration Programming and Relearning and Programming and Relearning).

PROCEDURE

1. PRE-CHECK
(a) Check that the brake hold standby indicator light operates normally Brake Hold Standby Indicator Light Circuit.
(b) If the brake hold operated indicator light does not illuminate although the brake hold standby indicator light is illuminated, check that the following brake hold operation (maintaining brake oil pressure) conditions are met.

- System is in operation standby state.
- Shift position is not P or R.
- Driver is depressing brake pedal and vehicle is fully stopped.
- Driver is not depressing accelerator pedal.
- Vehicle is not on steep decline.
HINT: For brake hold operation and completion condition details, refer to the following procedures Description and Operation.

NEXT -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE HOLD OPERATED INDICATOR LIGHT)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Select the Active Test mode on the Techstream.

Combination meter

(d) Check that the brake hold operated indicator light turns on or off on the Techstream.
OK:
The brake hold operated indicator light turns on or off in accordance with the Techstream.
NG -- GO TO METER AND GAUGE SYSTEM
OK -- Continue to next step.

3. PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE HOLD OPERATED INDICATOR LIGHT)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Select the Active Test mode on the Techstream.

ABS/VSC/TRAC